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A great vintage (2+) page original magazine article entitled: COLOR PHOTOS REVEAL SUBMARINE WONDERS...How Autochromes of the Ocean Bottom Are Obtained with the Aid of Huge Flashlight Charges...Sitting on the bottom of the sea and popping off a pound of flashlight powder at a time, Dr. W. H. Longley, of the National geographic society, recently obtained successful natural-color photographs of life under the ocean...Each page of the article measures approximately: 6 1/2" x 9 1/4" Condition: VG. Certificate of Authenticity is provided to show that this piece is from an original magazine (not a copy).